Mark Adams1941 Royal KMM Serial # KMM-27699531941 Royal KMM typewriter, Serial # KMM-2769953Mark Adams's 1941 Royal KMM typewriter.2015-02-282015-02-28From the Virtual Typewriter Collection of Mark Adams: 1941 Royal KMM Serial # KMM-2769953A Royal KMM, as seen in a thrift store. This typewriter was originally purchased (or serviced) at Hunter's Office Equipment in San Jose.